SE = 1.49, β = −.19, p = .008) and middle adults (B = −2.78, SE = 1.00, β = −.10, p = .005), but not among young adults (B = .71, SE = 1.18, β = .02, p = .550). The association between friend support and alcohol use also significantly differed across age groups (χ2 = 19.43, df = 2, p = < .001): higher friend support was associated with lower alcohol use among young adults (B = −7.57, SE = 1.64, β = −.21, p < .001), but not among emerging adults (B = 1.23, SE = 1.22, β = .05, p = .314) and middle adults (B = −.96, SE = .81, β = −.03, p = .232). There were no significant age differences in the associations between alc-GPS and sensation seeking or social support. The association between sensation seeking and alcohol use also did not significantly differ across age groups (see supplemental Table 7).
